From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755919AbcIAVCI (ORCPT ); Thu, 1 Sep 2016 17:02:08 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:58874 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755845AbcIAVCE (ORCPT ); Thu, 1 Sep 2016 17:02:04 -0400 Date: Thu, 1 Sep 2016 20:33:10 +0200 From: Greg Kroah-Hartman To: Joe Perches Cc: Andrey Utkin , Anson Jacob , Staging List , arve@android.com, riandrews@android.com, Kernel List Subject: Re: [PATCH] staging: android: lowmemorykiller.c: Fix checkpatch warning Message-ID: <20160901183310.GA7470@kroah.com> References: <20160825151025.GA4399@X250> <20160825152647.ts6oq4sanxlbuneh@acer> <20160901153621.GA24685@kroah.com> <1472753981.4176.122.camel@perches.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1472753981.4176.122.camel@perches.com> User-Agent: Mutt/1.7.0 (2016-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 01, 2016 at 11:19:41AM -0700, Joe Perches wrote: > On Thu, 2016-09-01 at 17:36 +0200, Greg Kroah-Hartman wrote: > > On Thu, Aug 25, 2016 at 06:26:48PM +0300, Andrey Utkin wrote: > > > > > > On Thu, Aug 25, 2016 at 11:10:25AM -0400, Anson Jacob wrote: > > > > > > > > Fix checkpatch.pl 'line over 80 characters' warning > > > > > > > > Signed-off-by: Anson Jacob > > > > --- > > > >  drivers/staging/android/lowmemorykiller.c | 4 ++-- > > > >  1 file changed, 2 insertions(+), 2 deletions(-) > > > > > > > > diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c > > > > index 45a1b4e..80d7adf 100644 > > > > --- a/drivers/staging/android/lowmemorykiller.c > > > > +++ b/drivers/staging/android/lowmemorykiller.c > > > > @@ -92,8 +92,8 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc) > > > >   int array_size = ARRAY_SIZE(lowmem_adj); > > > >   int other_free = global_page_state(NR_FREE_PAGES) - totalreserve_pages; > > > >   int other_file = global_node_page_state(NR_FILE_PAGES) - > > > > - global_node_page_state(NR_SHMEM) - > > > > - total_swapcache_pages(); > > > > + global_node_page_state(NR_SHMEM) - > > > > + total_swapcache_pages(); > > > >   > > > >   if (lowmem_adj_size < array_size) > > > >   array_size = lowmem_adj_size; > > > Indeed original alignment on opening brace here doesn't make sense. > > > I don't mind if your patch gets accepted, but out of curiosity I have opened > > > this file in vim with kernel coding style plugin loaded > > > (https://github.com/vivien/vim-linux-coding-style), selected the affected > > > lines, and reindented the selection by pressing 'gq'. It ended up with this, > > > being both shorter and simpler: > > > > > > diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c > > > index 45a1b4e..3aef467 100644 > > > --- a/drivers/staging/android/lowmemorykiller.c > > > +++ b/drivers/staging/android/lowmemorykiller.c > > > @@ -92,8 +92,7 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc) > > >   int array_size = ARRAY_SIZE(lowmem_adj); > > >   int other_free = global_page_state(NR_FREE_PAGES) - totalreserve_pages; > > >   int other_file = global_node_page_state(NR_FILE_PAGES) - > > > - global_node_page_state(NR_SHMEM) - > > > - total_swapcache_pages(); > > > + global_node_page_state(NR_SHMEM) - total_swapcache_pages(); > > The original patch here is nicer to read, don't you think? > > Strictly, these should probably be unsigned long instead of int > as that's the return type of global_[node_]page_state(). > > Maybe something like the below, but then maybe other_free/file > should become unsigned long too. > --- >  drivers/staging/android/lowmemorykiller.c | 9 +++++---- >  1 file changed, 5 insertions(+), 4 deletions(-) > > diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c > index 45a1b4e..e8e1eaf 100644 > --- a/drivers/staging/android/lowmemorykiller.c > +++ b/drivers/staging/android/lowmemorykiller.c > @@ -90,10 +90,11 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc) > int selected_tasksize = 0; > short selected_oom_score_adj; > int array_size = ARRAY_SIZE(lowmem_adj); > - int other_free = global_page_state(NR_FREE_PAGES) - totalreserve_pages; > - int other_file = global_node_page_state(NR_FILE_PAGES) - > - global_node_page_state(NR_SHMEM) - > - total_swapcache_pages(); > + unsigned long nr_free = global_page_state(NR_FREE_PAGES); > + unsigned long nr_file = global_node_page_state(NR_FILE_PAGES); > + unsigned long nr_shmem = global_node_page_state(NR_SHMEM); > + int other_free = nr_free - totalreserve_pages; > + int other_file = nr_file - nr_shmem - total_swapcache_pages(); > > if (lowmem_adj_size < array_size) > array_size = lowmem_adj_size; I like it, much easier to follow. Care to resend it in a patch form I can apply it in? thanks, greg k-h